102509941 has 2 divisors, whose sum is σ = 102509942. Its totient is φ = 102509940.

The previous prime is 102509929. The next prime is 102509947. The reversal of 102509941 is 149905201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95062500 + 7447441 = 9750^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 102509941 - 2¹⁷ = 102378869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102509947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51254970 + 51254971.

It is an arithmetic number, because the mean of its divisors is an integer number (51254971).

Almost surely, 2^102509941 is an apocalyptic number.

It is an amenable number.

102509941 is a deficient number, since it is larger than the sum of its proper divisors (1).

102509941 is an equidigital number, since it uses as much as digits as its factorization.

102509941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 102509941 is about 10124.7193047511. The cubic root of 102509941 is about 468.0102102260.

The spelling of 102509941 in words is "one hundred two million, five hundred nine thousand, nine hundred forty-one".